Origin: External occipital protuberance, superior nuchal line of skull Nuchal ligament from spines of seventh cervical and all thoracic verebrae

Insertion: Lateral third of the Clavicle, acromion and spine of the Scapula

Function: Adducts scapula, tilts chin, draws back acromion, rotates scapula at the Scapulothoracic Joint

Nerve: Spinal Accessory Nerve

Artery: Descending scapular artery

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